Machine Washable: Outdoor picnic blanket is super easy to clean due to its double sided rainproof and backing, easily shake and wipe off dirt, mud, wet grass, and beach sand. Feature: 1. Size: Picnic blanket unfolded size is 75.2x59.1in, it's large enough to fit for 6-8 adults for siting or 4 adults of lying, giving your family and pets a large area to play.